1 is sent home tonight on 'Idol'

It's time for the first weekly ouster episode. Tonight (barring a save), one person will be sent home.

First, there's music. Bon Jovi does "Because We Can," the 10 finalists combine for a song from the upcoming animated film "The Croods," and Phillip Phillips, last year's winner, is back.

Phillips' first album reached No. 4 on the Billboard chart and its first single "Home" reached No. 6. Now, he does its second single, "Gone, Gone, Gone," which people may eventually dread: It will be this season's exit song, performed during ousters.

TONIGHT'S MIGHT-SEE: "Two and a Half Men," 8:31 p.m., CBS.

In last week's funny, offbeat episode, Alan argued with Walden; he moved out ? and moved in with Herb (Ryan Stiles). These two men share an ex-wife and a solemn view of life.

Alan eventually moved back, but now he and Walden are concerned about Herb's despondency. They try to cheer him up ? then end up celebrating too hard.

Toni - a music great with six Grammys - got her first lead role in a cable movie (Lifetime's recent "Twist of Faith"). Towanda and Trina are patching up relationships; Traci is big on motorcycles.

But the big change is in Tamar, who's now obsessing on her own music ("Love & War" reached No. 57 on the Billboard chart and No. 13 on the R&B/hip-hop chart) and her own cable show. As this season starts, the others take a trip to Italy, while talking about the missing Tamar.

OTHER CHOICES INCLUDE:

? "The Big Bang Theory," 8 p.m., CBS. So far, Howard has only talked about his mom; now he debates whether to open a letter from his dad. Also, Leonard and Penny host a "grown-up" cocktail party.

? "Community," 8 p.m., NBC. Everyone is trying to figure out why Chang lost his memory. Dean Pelton wants to use this for a medical-research grant; Abed wants to turn it into a documentary film.